Equalizing-table.



R. F. RINGLE.

EQUALIZING TABLE.

APPLICATION FILED NOV. 20. 1914.

Li. Patelited May 15, 1917.

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R. F. RINGLE.

EQUALIZING TABLE.

APPUcATxoN FILED Nov. 2o, 1914.

`,26,256 Patented May l5, 1917.

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ROBERT FRANKLIN RINGLE, zELENoPLE, PENNSYLVANIA, ASSIGNOR TO HERMANPNEUMATIC MACHINE COMPANY, OF ZELIENOPLE, PENNSYLVANIA, A CORPORA- TIONOF PENNSYLVANIA.

EQUALIZING- TABLE.

Specification of Letters Patent.

Patented May 15, 191'?.

Application led November 20, 1914. Serial No. 873,161.

To all fw 7mm t may] concern.'

Be it known that I, ROBERT FRANKLIN RINGLE, a' citizen of the UnitedStates, and a resident of Zelienople, in the county 0f Butler and Stateof Pennsylvania, have in* vented a new and useful Improvement inEqualizing-Tables; and I do hereby declare the followingl to be a. full,clear, and exact description thereof.

My invention relates to equalizing tables for use with sand moldingmachines of the 3arring type and of such construction as to readilyconform to the surface of the pattern iiask to be carried thereon andwhich can then be locked in order to retain its position while the flaskis being lowered from around said pattern.

The object of my invention is to provide a cheap, simple and eificientform of equalizing table for use with sand molding machines of thejarring type which will be able to conform to any reasonable surface ofthe flask and which will not require any adjustment or regulation butwill assume the proper shape by pressure of the flask.

Another object of my invention is to provide an equalizing table whichcan be used independent of the jarring machine such as shown in thedrawings, or whichcan be applied tothe lowering cylinder of a jarringmachine of the type shown in the co-pending application of myself andWilliam M. Austin, filed March 1, 1913, Serial No. 751.425.

My invention consists, generally stated, in the novel arrangement,construction and combination of parts, as hereinafter more specificallyset forth and described and particularly pointed out in the claims.

To enable others skilled in the art to which my invention appertains toconstruct, use and operate y my improved equalizing table, l willdescribe the same more fully referring to the accompanying drawings inwhich:

Figure 1, is a perspective view of a molding machine showing my improvedequalizing table used in connection therewith.4`

Fig. 2, is an inverted plan view of my im,- proved equalizingl table forindependent use.

Fig. 3, is a front view of the same.

Fig. 4, is a side view of the same.

Fig. 5, is a side view of one of the side beams.

Fig. 6, is a cross sectional view of the de-v vice on the line 6-6 ofFig. 2.

Like symbols of reference herein indicate like parts in each of thefigures of the drawlng.

As illustrated in Fig. 1 of the drawing myy improved equalizing table Ais intended for use principally with sand molding machines, consistingof the body 1 which has a table 2 and cylinders 3 for lowering andraising the fia-sl; 4 and containing the pattern and sand (not shown) aslater eX- plained.

The equalizing table A consists of the frame 5, which is of any suitabledesign and is provided at a position near both ends of each side of thesame with a friction pad 6 for frictionally engaging with friction pad 7on the side beams S. The frame 5 has a round hole 9 extending throughcach side of the same, and the side beams 8 have a vertical slot 9through both of which the clamp rod 1() extends. One end of the clamprod 10 is provided with thread 11 forreceiving a nut 1 2, while theother end of said rod is provided with an eye 13 which lits into a slot14 in the cam 15 on the clamp lever 16. One of the side beams 8 isprovided on the outer face of the same with a pair of lugs 17 betweenwhich the nut 12 fits and is thereby prevented from turning. The frame 5is provided on one of the side faces of its cored. center 1S with a.pair of lugs 19, and the clainp rod 10 is provided with a rod. holder 20which fits around said rod and is held in position thereon by means ofthe pin 21. VThe rod holder 2O is square in shape and fits between thelugs 19 on the frame 5, so that the clamp rod 10 is thereby preventedfrom turning.

At the center of each end of the frame 5 and extending outward therefromis a lug 22 which is provided with a threaded hole 23 into which isthreaded the spring holding stud 24. Both ends of the equalizing tableare provided with an equalizing trally on studs 24, and, at their ends,en-

gage pads 28 on the side beams 8. The tension of the springs 25 exertedon the side beams 8 can be regulated by the nut 27 as will readily beseen.

At each corner of the frame 5 is an opening 29 which is defined by ribs30 and each of said ribs is provided at the center of the same with arecess 31 for receiving the spindles 32 of the roller 33. By having therecesses 31 in each of the ribs 30 the rollers can be placed in suchposition to provide for the table being rolled longitudinally orcrosswise. These rollers 33 are held in position and prevented fromleaving the recesses 31 by means of the plate 34 covering the same andsecured thereon by any suitable means such as the screws 35.

The operation of my improved equalizing table can be readily understoodby reference to Fig. 1. After the pattern and iiask have been placedupon the table 2 of the molding machine and jarred until the sand insaid flask has assumed the proper degree of solidity, said flask isclamped in the manner shown and connected with the cylinders 3 andelevated above the table 2 by turning the same by hand so that it is inthe position shown in Fig. 1. The equalizing table which has beenresting upon the rails 37 is now rolled over onto the table 2, where itis directly beneath the bottom of the flask 4. The cylinders 3 are nowoperated in order to lower the flask 4 until it strikes against the sidebeams 8 of the equalizing table A with just suliicient pressure to causethe side beams 8 to assume their proper positions on the follow board36.

The side beams 8, vertically adjustable as they are on the clamp rod 10by reason of the vertically slotted holes 9', are adjustable by theexerted pressure so that they conform accurately with that portion ofthe follow board with which they come in contact, and the ends of saidbeams supported only by the spring 25 can readily conform to the surfaceof the follow board against which they bear by overcoming a slightamount of the `tension of said springs.

When the' side beams 8 have thus been pressed by the weight of theflask, pattern, follow board,'etc. to where they conform with thesurface of the follow board 36, the operator grasps the handles 16 andpulls the same outward, whereupon the cam l5 will draw the clamp rod l0outward and cause the friction pads 7 on the side beams 8 to bear firmlyagainst the friction pads 6 on the frame 5, so that the weight of thesand filled flask will not move the position of said side beams when thepattern is withdrawn.

The clamps 38 are now removed from the flask 4 and the pattern plate 2ais raised by the action of the cylinders 3, thus drawing the patternfrom the sand. The Sand lled flask which is left resting on theequalizing table can now be rolled onto the rails 37, from whence it canbe removed for pouring.

It will readily be understood that the table may be connected directlyto a lowering cylinder as before referred to and as shown in theapplication Serial No. 751,425 and the side beams can be extended to anydesired length for taking care of any sized flask.

It will also be understood that any variations in the surface of thefollow board will be taken care of bythe side beams 8, which areindependently mounted, so that when the pattern is withdrawn from thesand there will be no jarring or tilting which would disturb the moldedsand.

It will also be at once apparent that the slots in the side beamsthrough which the clamp bar extends will permit of the vertical movementof either of said beams independently of the other.

Various modifications and changes in the design, construction, andapplication of my improved equalizing table may be resorted to withoutdeparting from the spirit 'of the invention or sacrificing any of itsadvantages.

What I claim as my invention and desire to secure by Letters Patentis 1. An equalizing table comprising a transportable body portion,parallel side beams pivoted to said body portion and adapted to conformto the surface against which the same come in contact, springs on saidbody portion and engaging with said beams for normally fixing theposition of said side beams, friction pads on said body and beams andmeans for locking said side beams in their assumed positions.

2. An equalizing table including a body member, parallel beams pivotallycarried thereby, yieldable means terminally supporting said beams, meanswhereby said beams may be vertically adjusted, and means for lockingsaid beams in adjusted position.

3. An equalizing table including a body member, rollers journaled at thecorners thereof for transporting the table on and oil a molding machine,beams pivotally attached to the body member for vertical adjustmentwith' respect thereto, yieldable means normally maintaining the beams inhorizontal position, and means for looking said beamsI against bothswinging and vertical movement.

4. An equalizing table including a body member', parallel beamsextending longitudinally with respect to the body member, transversespring members terminally supporting the beams, means pivotallyconnecting the beams to the body member, said lo body member beingvertically adjustable on said means, and a locking member carried bysaid means for holding the beams in adjusted position.

In testimony whereof, I the said ROBERT FRANKLIN RINGLE, have hereuntoset my l5 Copies of this patent may be obtained for ve cents each, byaddressing che Commissioner of Patents, Washington, D. C.

